text: /*-
   * Copyright (c) 2000-2003 Marcel Moolenaar
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <sys/cdefs.h>
  __FBSDID("$FreeBSD: src/sys/ia64/disasm/disasm_decode.c,v 1.3 2005/01/06 22:18:22 imp Exp $");
  
  #include <sys/param.h>
  #include <sys/systm.h>
  
  #include <ia64/disasm/disasm_int.h>
  #include <ia64/disasm/disasm.h>
  
  /*
   * Template names.
   */
  static const char *asm_templname[] = {
  	"MII", "MII;", "MI;I", "MI;I;", "MLX", "MLX;", 0, 0,
  	"MMI", "MMI;", "M;MI", "M;MI;", "MFI", "MFI;", "MMF", "MMF;",
  	"MIB", "MIB;", "MBB", "MBB;", 0, 0, "BBB", "BBB;",
  	"MMB", "MMB;", 0, 0, "MFB", "MFB;", 0, 0
  };
  
  /*
   * Decode A-unit instructions.
   */
  static int
  asm_decodeA(uint64_t bits, struct asm_bundle *b, int slot)
  {
  	enum asm_fmt fmt;
  	enum asm_op op;
  
  	fmt = ASM_FMT_NONE, op = ASM_OP_NONE;
  	switch((int)OPCODE(bits)) {
  	case 0x8:
  		switch (FIELD(bits, 34, 2)) { /* x2a */
  		case 0x0:
  			if (FIELD(bits, 33, 1) == 0) { /* ve */
  				switch (FIELD(bits, 29, 4)) { /* x4 */
  				case 0x0:
  					if (FIELD(bits, 27, 2) <= 1) /* x2b */
  						op = ASM_OP_ADD,
  						    fmt = ASM_FMT_A1;
  					break;
  				case 0x1:
  					if (FIELD(bits, 27, 2) <= 1) /* x2b */
  						op = ASM_OP_SUB,
  						    fmt = ASM_FMT_A1;
  					break;
  				case 0x2:
  					if (FIELD(bits, 27, 2) == 0) /* x2b */
  						op = ASM_OP_ADDP4,
  						    fmt = ASM_FMT_A1;
  					break;
  				case 0x3:
  					switch (FIELD(bits, 27, 2)) { /* x2b */
  					case 0x0:
  						op = ASM_OP_AND,
  						    fmt = ASM_FMT_A1;
  						break;
  					case 0x1:
  						op = ASM_OP_ANDCM,
  						    fmt = ASM_FMT_A1;
  						break;
  					case 0x2:
  						op = ASM_OP_OR,
  						    fmt = ASM_FMT_A1;
  						break;
  					case 0x3:
  						op = ASM_OP_XOR,
  						    fmt = ASM_FMT_A1;
  						break;
  					}
  					break;
  				case 0xB:
  					switch (FIELD(bits, 27, 2)) { /* x2b */
  					case 0x0:
  						op = ASM_OP_AND,
  						    fmt = ASM_FMT_A3;
  						break;
  					case 0x1:
  						op = ASM_OP_ANDCM,
  						    fmt = ASM_FMT_A3;
  						break;
  					case 0x2:
  						op = ASM_OP_OR,
  						    fmt = ASM_FMT_A3;
  						break;
  					case 0x3:
  						op = ASM_OP_XOR,
  						    fmt = ASM_FMT_A3;
  						break;
  					}
  					break;
  				case 0x4:
  					op = ASM_OP_SHLADD, fmt = ASM_FMT_A2;
  					break;
  				case 0x6:
  					op = ASM_OP_SHLADDP4, fmt = ASM_FMT_A2;
  					break;
  				case 0x9:
  					if (FIELD(bits, 27, 2) == 1) /* x2b */
  						op = ASM_OP_SUB,
  						    fmt = ASM_FMT_A3;
  					break;
  				}
  			}
  			break;
  		case 0x1:
  			switch (FIELD(bits, 29, 8)) { /* za + x2a + zb + x4 */
  			case 0x20:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PADD1_, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PADD1_SSS,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x2:
  					op = ASM_OP_PADD1_UUU,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x3:
  					op = ASM_OP_PADD1_UUS,
  					    fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x21:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PSUB1_, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PSUB1_SSS,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x2:
  					op = ASM_OP_PSUB1_UUU,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x3:
  					op = ASM_OP_PSUB1_UUS,
  					    fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x22:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x2:
  					op = ASM_OP_PAVG1_, fmt = ASM_FMT_A9;
  					break;
  				case 0x3:
  					op = ASM_OP_PAVG1_RAZ,
  					    fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x23:
  				if (FIELD(bits, 27, 2) == 2) /* x2b */
  					op = ASM_OP_PAVGSUB1, fmt = ASM_FMT_A9;
  				break;
  			case 0x29:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PCMP1_EQ, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PCMP1_GT, fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x30:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PADD2_, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PADD2_SSS,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x2:
  					op = ASM_OP_PADD2_UUU,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x3:
  					op = ASM_OP_PADD2_UUS,
  					    fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x31:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PSUB2_, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PSUB2_SSS,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x2:
  					op = ASM_OP_PSUB2_UUU,
  					    fmt = ASM_FMT_A9;
  					break;
  				case 0x3:
  					op = ASM_OP_PSUB2_UUS,
  					    fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x32:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x2:
  					op = ASM_OP_PAVG2_, fmt = ASM_FMT_A9;
  					break;
  				case 0x3:
  					op = ASM_OP_PAVG2_RAZ,
  					    fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0x33:
  				if (FIELD(bits, 27, 2) == 2) /* x2b */
  					op = ASM_OP_PAVGSUB2, fmt = ASM_FMT_A9;
  				break;
  			case 0x34:
  				op = ASM_OP_PSHLADD2, fmt = ASM_FMT_A10;
  				break;
  			case 0x36:
  				op = ASM_OP_PSHRADD2, fmt = ASM_FMT_A10;
  				break;
  			case 0x39:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PCMP2_EQ, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PCMP2_GT, fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			case 0xA0:
  				if (FIELD(bits, 27, 2) == 0) /* x2b */
  					op = ASM_OP_PADD4, fmt = ASM_FMT_A9;
  				break;
  			case 0xA1:
  				if (FIELD(bits, 27, 2) == 0) /* x2b */
  					op = ASM_OP_PSUB4, fmt = ASM_FMT_A9;
  				break;
  			case 0xA9:
  				switch (FIELD(bits, 27, 2)) { /* x2b */
  				case 0x0:
  					op = ASM_OP_PCMP4_EQ, fmt = ASM_FMT_A9;
  					break;
  				case 0x1:
  					op = ASM_OP_PCMP4_GT, fmt = ASM_FMT_A9;
  					break;
  				}
  				break;
  			}
  			break;
  		case 0x2:
  			if (FIELD(bits, 33, 1) == 0) /* ve */
  				op = ASM_OP_ADDS, fmt = ASM_FMT_A4;
  			break;
  		case 0x3:
  			if (FIELD(bits, 33, 1) == 0) /* ve */
  				op = ASM_OP_ADDP4, fmt = ASM_FMT_A4;
  			break;
  		}
  		break;
  	case 0x9:
  		op = ASM_OP_ADDL, fmt = ASM_FMT_A5;
  		break;
  	case 0xC: case 0xD: case 0xE:
  		if (FIELD(bits, 12, 1) == 0) { /* c */
  			switch (FIELD(bits, 33, 8)) { /* maj + tb + x2 + ta */
  			case 0xC0:
  				op = ASM_OP_CMP_LT, fmt = ASM_FMT_A6;
  				break;
  			case 0xC1:
  				op = ASM_OP_CMP_EQ_AND, fmt = ASM_FMT_A6;
  				break;
  			case 0xC2:
  				op = ASM_OP_CMP4_LT, fmt = ASM_FMT_A6;
  				break;
  			case 0xC3:
  				op = ASM_OP_CMP4_EQ_AND, fmt = ASM_FMT_A6;
  				break;
  			case 0xC4: case 0xCC:
  				op = ASM_OP_CMP_LT, fmt = ASM_FMT_A8;
  				break;
  			case 0xC5: case 0xCD:
  				op = ASM_OP_CMP_EQ_AND, fmt = ASM_FMT_A8;
  				break;
  			case 0xC6: case 0xCE:
  				op = ASM_OP_CMP4_LT, fmt = ASM_FMT_A8;
  				break;
  			case 0xC7: case 0xCF:
  				op = ASM_OP_CMP4_EQ_AND, fmt = ASM_FMT_A8;
  				break;
  			case 0xC8:
  				op = ASM_OP_CMP_GT_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xC9:
  				op = ASM_OP_CMP_GE_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xCA:
  				op = ASM_OP_CMP4_GT_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xCB:
  				op = ASM_OP_CMP4_GE_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xD0:
  				op = ASM_OP_CMP_LTU, fmt = ASM_FMT_A6;
  				break;
  			case 0xD1:
  				op = ASM_OP_CMP_EQ_OR, fmt = ASM_FMT_A6;
  				break;
  			case 0xD2:
  				op = ASM_OP_CMP4_LTU, fmt = ASM_FMT_A6;
  				break;
  			case 0xD3:
  				op = ASM_OP_CMP4_EQ_OR, fmt = ASM_FMT_A6;
  				break;
  			case 0xD4: case 0xDC:
  				op = ASM_OP_CMP_LTU, fmt = ASM_FMT_A8;
  				break;
  			case 0xD5: case 0xDD:
  				op = ASM_OP_CMP_EQ_OR, fmt = ASM_FMT_A8;
  				break;
  			case 0xD6: case 0xDE:
  				op = ASM_OP_CMP4_LTU, fmt = ASM_FMT_A8;
  				break;
  			case 0xD7: case 0xDF:
  				op = ASM_OP_CMP4_EQ_OR, fmt = ASM_FMT_A8;
  				break;
  			case 0xD8:
  				op = ASM_OP_CMP_GT_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xD9:
  				op = ASM_OP_CMP_GE_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xDA:
  				op = ASM_OP_CMP4_GT_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xDB:
  				op = ASM_OP_CMP4_GE_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xE0:
  				op = ASM_OP_CMP_EQ, fmt = ASM_FMT_A6;
  				break;
  			case 0xE1:
  				op = ASM_OP_CMP_EQ_OR_ANDCM, fmt = ASM_FMT_A6;
  				break;
  			case 0xE2:
  				op = ASM_OP_CMP4_EQ, fmt = ASM_FMT_A6;
  				break;
  			case 0xE3:
  				op = ASM_OP_CMP4_EQ_OR_ANDCM, fmt = ASM_FMT_A6;
  				break;
  			case 0xE4: case 0xEC:
  				op = ASM_OP_CMP_EQ, fmt = ASM_FMT_A8;
  				break;
  			case 0xE5: case 0xED:
  				op = ASM_OP_CMP_EQ_OR_ANDCM, fmt = ASM_FMT_A8;
  				break;
  			case 0xE6: case 0xEE:
  				op = ASM_OP_CMP4_EQ, fmt = ASM_FMT_A8;
  				break;
  			case 0xE7: case 0xEF:
  				op = ASM_OP_CMP4_EQ_OR_ANDCM, fmt = ASM_FMT_A8;
  				break;
  			case 0xE8:
  				op = ASM_OP_CMP_GT_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			case 0xE9:
  				op = ASM_OP_CMP_GE_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			case 0xEA:
  				op = ASM_OP_CMP4_GT_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			case 0xEB:
  				op = ASM_OP_CMP4_GE_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			}
  		} else {
  			switch (FIELD(bits, 33, 8)) { /* maj + tb + x2 + ta */
  			case 0xC0:
  				op = ASM_OP_CMP_LT_UNC, fmt = ASM_FMT_A6;
  				break;
  			case 0xC1:
  				op = ASM_OP_CMP_NE_AND, fmt = ASM_FMT_A6;
  				break;
  			case 0xC2:
  				op = ASM_OP_CMP4_LT_UNC, fmt = ASM_FMT_A6;
  				break;
  			case 0xC3:
  				op = ASM_OP_CMP4_NE_AND, fmt = ASM_FMT_A6;
  				break;
  			case 0xC4: case 0xCC:
  				op = ASM_OP_CMP_LT_UNC, fmt = ASM_FMT_A8;
  				break;
  			case 0xC5: case 0xCD:
  				op = ASM_OP_CMP_NE_AND, fmt = ASM_FMT_A8;
  				break;
  			case 0xC6: case 0xCE:
  				op = ASM_OP_CMP4_LT_UNC, fmt = ASM_FMT_A8;
  				break;
  			case 0xC7: case 0xCF:
  				op = ASM_OP_CMP4_NE_AND, fmt = ASM_FMT_A8;
  				break;
  			case 0xC8:
  				op = ASM_OP_CMP_LE_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xC9:
  				op = ASM_OP_CMP_LT_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xCA:
  				op = ASM_OP_CMP4_LE_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xCB:
  				op = ASM_OP_CMP4_LT_AND, fmt = ASM_FMT_A7;
  				break;
  			case 0xD0:
  				op = ASM_OP_CMP_LTU_UNC, fmt = ASM_FMT_A6;
  				break;
  			case 0xD1:
  				op = ASM_OP_CMP_NE_OR, fmt = ASM_FMT_A6;
  				break;
  			case 0xD2:
  				op = ASM_OP_CMP4_LTU_UNC, fmt = ASM_FMT_A6;
  				break;
  			case 0xD3:
  				op = ASM_OP_CMP4_NE_OR, fmt = ASM_FMT_A6;
  				break;
  			case 0xD4: case 0xDC:
  				op = ASM_OP_CMP_LTU_UNC, fmt = ASM_FMT_A8;
  				break;
  			case 0xD5: case 0xDD:
  				op = ASM_OP_CMP_NE_OR, fmt = ASM_FMT_A8;
  				break;
  			case 0xD6: case 0xDE:
  				op = ASM_OP_CMP4_LTU_UNC, fmt = ASM_FMT_A8;
  				break;
  			case 0xD7: case 0xDF:
  				op = ASM_OP_CMP4_NE_OR, fmt = ASM_FMT_A8;
  				break;
  			case 0xD8:
  				op = ASM_OP_CMP_LE_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xD9:
  				op = ASM_OP_CMP_LT_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xDA:
  				op = ASM_OP_CMP4_LE_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xDB:
  				op = ASM_OP_CMP4_LT_OR, fmt = ASM_FMT_A7;
  				break;
  			case 0xE0:
  				op = ASM_OP_CMP_EQ_UNC, fmt = ASM_FMT_A6;
  				break;
  			case 0xE1:
  				op = ASM_OP_CMP_NE_OR_ANDCM, fmt = ASM_FMT_A6;
  				break;
  			case 0xE2:
  				op = ASM_OP_CMP4_EQ_UNC, fmt = ASM_FMT_A6;
  				break;
  			case 0xE3:
  				op = ASM_OP_CMP4_NE_OR_ANDCM, fmt = ASM_FMT_A6;
  				break;
  			case 0xE4: case 0xEC:
  				op = ASM_OP_CMP_EQ_UNC, fmt = ASM_FMT_A8;
  				break;
  			case 0xE5: case 0xED:
  				op = ASM_OP_CMP_NE_OR_ANDCM, fmt = ASM_FMT_A8;
  				break;
  			case 0xE6: case 0xEE:
  				op = ASM_OP_CMP4_EQ_UNC, fmt = ASM_FMT_A8;
  				break;
  			case 0xE7: case 0xEF:
  				op = ASM_OP_CMP4_NE_OR_ANDCM, fmt = ASM_FMT_A8;
  				break;
  			case 0xE8:
  				op = ASM_OP_CMP_LE_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			case 0xE9:
  				op = ASM_OP_CMP_LT_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			case 0xEA:
  				op = ASM_OP_CMP4_LE_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			case 0xEB:
  				op = ASM_OP_CMP4_LT_OR_ANDCM, fmt = ASM_FMT_A7;
  				break;
  			}
  		}
  		break;
  	}
  
  	if (op != ASM_OP_NONE)
  		return (asm_extract(op, fmt, bits, b, slot));
  	return (0);
  }
  
  /*
   * Decode B-unit instructions.
   */
  static int
  asm_decodeB(uint64_t ip, struct asm_bundle *b, int slot)
  {
  	uint64_t bits;
  	enum asm_fmt fmt;
  	enum asm_op op;
  
  	bits = SLOT(ip, slot);
  	fmt = ASM_FMT_NONE, op = ASM_OP_NONE;
  
  	switch((int)OPCODE(bits)) {
  	case 0x0:
  		switch (FIELD(bits, 27, 6)) { /* x6 */
  		case 0x0:
  			op = ASM_OP_BREAK_B, fmt = ASM_FMT_B9;
  			break;
  		case 0x2:
  			op = ASM_OP_COVER, fmt = ASM_FMT_B8;
  			break;
  		case 0x4:
  			op = ASM_OP_CLRRRB_, fmt = ASM_FMT_B8;
  			break;
  		case 0x5:
  			op = ASM_OP_CLRRRB_PR, fmt = ASM_FMT_B8;
  			break;
  		case 0x8:
  			op = ASM_OP_RFI, fmt = ASM_FMT_B8;
  			break;
  		case 0xC:
  			op = ASM_OP_BSW_0, fmt = ASM_FMT_B8;
  			break;
  		case 0xD:
  			op = ASM_OP_BSW_1, fmt = ASM_FMT_B8;
  			break;
  		case 0x10:
  			op = ASM_OP_EPC, fmt = ASM_FMT_B8;
  			break;
  		case 0x20:
  			switch (FIELD(bits, 6, 3)) { /* btype */
  			case 0x0:
  				op = ASM_OP_BR_COND, fmt = ASM_FMT_B4;
  				break;
  			case 0x1:
  				op = ASM_OP_BR_IA, fmt = ASM_FMT_B4;
  				break;
  			}
  			break;
  		case 0x21:
  			if (FIELD(bits, 6, 3) == 4) /* btype */
  				op = ASM_OP_BR_RET, fmt = ASM_FMT_B4;
  			break;
  		}
  		break;
  	case 0x1:
  		op = ASM_OP_BR_CALL, fmt = ASM_FMT_B5;
  		break;
  	case 0x2:
  		switch (FIELD(bits, 27, 6)) { /* x6 */
  		case 0x0:
  			op = ASM_OP_NOP_B, fmt = ASM_FMT_B9;
  			break;
  		case 0x10:
  			op = ASM_OP_BRP_, fmt = ASM_FMT_B7;
  			break;
  		case 0x11:
  			op = ASM_OP_BRP_RET, fmt = ASM_FMT_B7;
  			break;
  		}
  		break;
  	case 0x4:
  		switch (FIELD(bits, 6, 3)) { /* btype */
  		case 0x0:
  			op = ASM_OP_BR_COND, fmt = ASM_FMT_B1;
  			break;
  		case 0x2:
  			op = ASM_OP_BR_WEXIT, fmt = ASM_FMT_B1;
  			break;
  		case 0x3:
  			op = ASM_OP_BR_WTOP, fmt = ASM_FMT_B1;
  			break;
  		case 0x5:
  			op = ASM_OP_BR_CLOOP, fmt = ASM_FMT_B2;
  			break;
  		case 0x6:
  			op = ASM_OP_BR_CEXIT, fmt = ASM_FMT_B2;
  			break;
  		case 0x7:
  			op = ASM_OP_BR_CTOP, fmt = ASM_FMT_B2;
  			break;
  		}
  		break;
  	case 0x5:
  		op = ASM_OP_BR_CALL, fmt = ASM_FMT_B3;
  		break;
  	case 0x7:
  		op = ASM_OP_BRP_, fmt = ASM_FMT_B6;
  		break;
  	}
  
  	if (op != ASM_OP_NONE)
  		return (asm_extract(op, fmt, bits, b, slot));
  	return (0);
  }
  
  /*
   * Decode F-unit instructions.
   */
  static int
  asm_decodeF(uint64_t ip, struct asm_bundle *b, int slot)
  {
  	uint64_t bits;
  	enum asm_fmt fmt;
  	enum asm_op op;
  
  	bits = SLOT(ip, slot);
  	fmt = ASM_FMT_NONE, op = ASM_OP_NONE;
  
  	switch((int)OPCODE(bits)) {
  	case 0x0:
  		if (FIELD(bits, 33, 1) == 0) { /* x */
  			switch (FIELD(bits, 27, 6)) { /* x6 */
  			case 0x0:
  				op = ASM_OP_BREAK_F, fmt = ASM_FMT_F15;
  				break;
  			case 0x1:
  				op = ASM_OP_NOP_F, fmt = ASM_FMT_F15;
  				break;
  			case 0x4:
  				op = ASM_OP_FSETC, fmt = ASM_FMT_F12;
  				break;
  			case 0x5:
  				op = ASM_OP_FCLRF, fmt = ASM_FMT_F13;
  				break;
  			case 0x8:
  				op = ASM_OP_FCHKF, fmt = ASM_FMT_F14;
  				break;
  			case 0x10:
  				op = ASM_OP_FMERGE_S, fmt = ASM_FMT_F9;
  				break;
  			case 0x11:
  				op = ASM_OP_FMERGE_NS, fmt = ASM_FMT_F9;
  				break;
  			case 0x12:
  				op = ASM_OP_FMERGE_SE, fmt = ASM_FMT_F9;
  				break;
  			case 0x14:
  				op = ASM_OP_FMIN, fmt = ASM_FMT_F8;
  				break;
  			case 0x15:
  				op = ASM_OP_FMAX, fmt = ASM_FMT_F8;
  				break;
  			case 0x16:
  				op = ASM_OP_FAMIN, fmt = ASM_FMT_F8;
  				break;
  			case 0x17:
  				op = ASM_OP_FAMAX, fmt = ASM_FMT_F8;
  				break;
  			case 0x18:
  				op = ASM_OP_FCVT_FX, fmt = ASM_FMT_F10;
  				break;
  			case 0x19:
  				op = ASM_OP_FCVT_FXU, fmt = ASM_FMT_F10;
  				break;
  			case 0x1A:
  				op = ASM_OP_FCVT_FX_TRUNC, fmt = ASM_FMT_F10;
  				break;
  			case 0x1B:
  				op = ASM_OP_FCVT_FXU_TRUNC, fmt = ASM_FMT_F10;
  				break;
  			case 0x1C:
  				op = ASM_OP_FCVT_XF, fmt = ASM_FMT_F11;
  				break;
  			case 0x28:
  				op = ASM_OP_FPACK, fmt = ASM_FMT_F9;
  				break;
  			case 0x2C:
  				op = ASM_OP_FAND, fmt = ASM_FMT_F9;
  				break;
  			case 0x2D:
  				op = ASM_OP_FANDCM, fmt = ASM_FMT_F9;
  				break;
  			case 0x2E:
  				op = ASM_OP_FOR, fmt = ASM_FMT_F9;
  				break;
  			case 0x2F:
  				op = ASM_OP_FXOR, fmt = ASM_FMT_F9;
  				break;
  			case 0x34:
  				op = ASM_OP_FSWAP_, fmt = ASM_FMT_F9;
  				break;
  			case 0x35:
  				op = ASM_OP_FSWAP_NL, fmt = ASM_FMT_F9;
  				break;
  			case 0x36:
  				op = ASM_OP_FSWAP_NR, fmt = ASM_FMT_F9;
  				break;
  			case 0x39:
  				op = ASM_OP_FMIX_LR, fmt = ASM_FMT_F9;
  				break;
  			case 0x3A:
  				op = ASM_OP_FMIX_R, fmt = ASM_FMT_F9;
  				break;
  			case 0x3B:
  				op = ASM_OP_FMIX_L, fmt = ASM_FMT_F9;
  				break;
  			case 0x3C:
  				op = ASM_OP_FSXT_R, fmt = ASM_FMT_F9;
  				break;
  			case 0x3D:
  				op = ASM_OP_FSXT_L, fmt = ASM_FMT_F9;
  				break;
  			}
  		} else {
  			if (FIELD(bits, 36, 1) == 0) /* q */
  				op = ASM_OP_FRCPA, fmt = ASM_FMT_F6;
  			else
  				op = ASM_OP_FRSQRTA, fmt = ASM_FMT_F7;
  		}
  		break;
  	case 0x1:
  		if (FIELD(bits, 33, 1) == 0) { /* x */
  			switch (FIELD(bits, 27, 6)) { /* x6 */
  			case 0x10:
  				op = ASM_OP_FPMERGE_S, fmt = ASM_FMT_F9;
  				break;
  			case 0x11:
  				op = ASM_OP_FPMERGE_NS, fmt = ASM_FMT_F9;
  				break;
  			case 0x12:
  				op = ASM_OP_FPMERGE_SE, fmt = ASM_FMT_F9;
  				break;
  			case 0x14:
  				op = ASM_OP_FPMIN, fmt = ASM_FMT_F8;
  				break;
  			case 0x15:
  				op = ASM_OP_FPMAX, fmt = ASM_FMT_F8;
  				break;
  			case 0x16:
  				op = ASM_OP_FPAMIN, fmt = ASM_FMT_F8;
  				break;
  			case 0x17:
  				op = ASM_OP_FPAMAX, fmt = ASM_FMT_F8;
  				break;
  			case 0x18:
  				op = ASM_OP_FPCVT_FX, fmt = ASM_FMT_F10;
  				break;
  			case 0x19:
  				op = ASM_OP_FPCVT_FXU, fmt = ASM_FMT_F10;
  				break;
  			case 0x1A:
  				op = ASM_OP_FPCVT_FX_TRUNC, fmt = ASM_FMT_F10;
  				break;
  			case 0x1B:
  				op = ASM_OP_FPCVT_FXU_TRUNC, fmt = ASM_FMT_F10;
  				break;
  			case 0x30:
  				op = ASM_OP_FPCMP_EQ, fmt = ASM_FMT_F8;
  				break;
  			case 0x31:
  				op = ASM_OP_FPCMP_LT, fmt = ASM_FMT_F8;
  				break;
  			case 0x32:
  				op = ASM_OP_FPCMP_LE, fmt = ASM_FMT_F8;
  				break;
  			case 0x33:
  				op = ASM_OP_FPCMP_UNORD, fmt = ASM_FMT_F8;
  				break;
  			case 0x34:
  				op = ASM_OP_FPCMP_NEQ, fmt = ASM_FMT_F8;
  				break;
  			case 0x35:
  				op = ASM_OP_FPCMP_NLT, fmt = ASM_FMT_F8;
  				break;
  			case 0x36:
  				op = ASM_OP_FPCMP_NLE, fmt = ASM_FMT_F8;
  				break;
  			case 0x37:
  				op = ASM_OP_FPCMP_ORD, fmt = ASM_FMT_F8;
  				break;
  			}
  		} else {
  			if (FIELD(bits, 36, 1) == 0) /* q */
  				op = ASM_OP_FPRCPA, fmt = ASM_FMT_F6;
  			else
  				op = ASM_OP_FPRSQRTA, fmt = ASM_FMT_F7;
  		}
  		break;
  	case 0x4:
  		op = ASM_OP_FCMP, fmt = ASM_FMT_F4;
  		break;
  	case 0x5:
  		op = ASM_OP_FCLASS_M, fmt = ASM_FMT_F5;
  		break;
  	case 0x8:
  		if (FIELD(bits, 36, 1) == 0) /* x */
  			op = ASM_OP_FMA_, fmt = ASM_FMT_F1;
  		else
  			op = ASM_OP_FMA_S, fmt = ASM_FMT_F1;
  		break;
  	case 0x9:
  		if (FIELD(bits, 36, 1) == 0) /* x */
  			op = ASM_OP_FMA_D, fmt = ASM_FMT_F1;
  		else
  			op = ASM_OP_FPMA, fmt = ASM_FMT_F1;
  		break;
  	case 0xA:
  		if (FIELD(bits, 36, 1) == 0) /* x */
  			op = ASM_OP_FMS_, fmt = ASM_FMT_F1;
  		else
  			op = ASM_OP_FMS_S, fmt = ASM_FMT_F1;
  		break;
  	case 0xB:
  		if (FIELD(bits, 36, 1) == 0) /* x */
  			op = ASM_OP_FMS_D, fmt = ASM_FMT_F1;
  		else
  			op = ASM_OP_FPMS, fmt = ASM_FMT_F1;
  		break;
  	case 0xC:
  		if (FIELD(bits, 36, 1) == 0) /* x */
  			op = ASM_OP_FNMA_, fmt = ASM_FMT_F1;
  		else
  			op = ASM_OP_FNMA_S, fmt = ASM_FMT_F1;
  		break;
  	case 0xD:
  		if (FIELD(bits, 36, 1) == 0) /* x */
  			op = ASM_OP_FNMA_D, fmt = ASM_FMT_F1;
  		else
  			op = ASM_OP_FPNMA, fmt = ASM_FMT_F1;
  		break;
  	case 0xE:
  		if (FIELD(bits, 36, 1) == 1) { /* x */
  			switch (FIELD(bits, 34, 2)) { /* x2 */
  			case 0x0:
  				op = ASM_OP_XMA_L, fmt = ASM_FMT_F2;
  				break;
  			case 0x2:
  				op = ASM_OP_XMA_HU, fmt = ASM_FMT_F2;
  				break;
  			case 0x3:
  				op = ASM_OP_XMA_H, fmt = ASM_FMT_F2;
  				break;
  			}
  		} else
  			op = ASM_OP_FSELECT, fmt = ASM_FMT_F3;
  		break;
  	}
  
  	if (op != ASM_OP_NONE)
  		return (asm_extract(op, fmt, bits, b, slot));
  	return (0);
  }
  
  /*
   * Decode I-unit instructions.
   */
  static int
  asm_decodeI(uint64_t ip, struct asm_bundle *b, int slot)
  {
  	uint64_t bits;
  	enum asm_fmt fmt;
  	enum asm_op op;
  
  	bits = SLOT(ip, slot);
  	if ((int)OPCODE(bits) >= 8)
  		return (asm_decodeA(bits, b, slot));
  	fmt = ASM_FMT_NONE, op = ASM_OP_NONE;
  
  	switch((int)OPCODE(bits)) {
  	case 0x0:
  		switch (FIELD(bits, 33, 3)) { /* x3 */
  		case 0x0:
  			switch (FIELD(bits, 27, 6)) { /* x6 */
  			case 0x0:
  				op = ASM_OP_BREAK_I, fmt = ASM_FMT_I19;
  				break;
  			case 0x1:
  				op = ASM_OP_NOP_I, fmt = ASM_FMT_I19;
  				break;
  			case 0xA:
  				op = ASM_OP_MOV_I, fmt = ASM_FMT_I27;
  				break;
  			case 0x10:
  				op = ASM_OP_ZXT1, fmt = ASM_FMT_I29;
  				break;
  			case 0x11:
  				op = ASM_OP_ZXT2, fmt = ASM_FMT_I29;
  				break;
  			case 0x12:
  				op = ASM_OP_ZXT4, fmt = ASM_FMT_I29;
  				break;
  			case 0x14:
  				op = ASM_OP_SXT1, fmt = ASM_FMT_I29;
  				break;
  			case 0x15:
  				op = ASM_OP_SXT2, fmt = ASM_FMT_I29;
  				break;
  			case 0x16:
  				op = ASM_OP_SXT4, fmt = ASM_FMT_I29;
  				break;
  			case 0x18:
  				op = ASM_OP_CZX1_L, fmt = ASM_FMT_I29;
  				break;
  			case 0x19:
  				op = ASM_OP_CZX2_L, fmt = ASM_FMT_I29;
  				break;
  			case 0x1C:
  				op = ASM_OP_CZX1_R, fmt = ASM_FMT_I29;
  				break;
  			case 0x1D:
  				op = ASM_OP_CZX2_R, fmt = ASM_FMT_I29;
  				break;
  			case 0x2A:
  				op = ASM_OP_MOV_I, fmt = ASM_FMT_I26;
  				break;
  			case 0x30:
  				op = ASM_OP_MOV_IP, fmt = ASM_FMT_I25;
  				break;
  			case 0x31:
  				op = ASM_OP_MOV_, fmt = ASM_FMT_I22;
  				break;
  			case 0x32:
  				op = ASM_OP_MOV_I, fmt = ASM_FMT_I28;
  				break;
  			case 0x33:
  				op = ASM_OP_MOV_PR, fmt = ASM_FMT_I25;
  				break;
  			}
  			break;
  		case 0x1:
  			op = ASM_OP_CHK_S_I, fmt = ASM_FMT_I20;
  			break;
  		case 0x2:
  			op = ASM_OP_MOV_, fmt = ASM_FMT_I24;
  			break;
  		case 0x3:
  			op = ASM_OP_MOV_, fmt = ASM_FMT_I23;
  			break;
  		case 0x7:
  			if (FIELD(bits, 22, 1) == 0) /* x */
  				op = ASM_OP_MOV_, fmt = ASM_FMT_I21;
  			else
  				op = ASM_OP_MOV_RET, fmt = ASM_FMT_I21;
  			break;
  		}
  		break;
  	case 0x4:
  		op = ASM_OP_DEP_, fmt = ASM_FMT_I15;
  		break;
  	case 0x5:
  		switch (FIELD(bits, 33, 3)) { /* x + x2 */
  		case 0x0:
  			if (FIELD(bits, 36, 1) == 0) { /* tb */
  				switch (FIELD(bits, 12, 2)) { /* c + y */
  				case 0x0:
  					op = ASM_OP_TBIT_Z, fmt = ASM_FMT_I16;
  					break;
  				case 0x1:
  					op = ASM_OP_TBIT_Z_UNC,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x2:
  					op = ASM_OP_TNAT_Z, fmt = ASM_FMT_I17;
  					break;
  				case 0x3:
  					op = ASM_OP_TNAT_Z_UNC,
  					    fmt = ASM_FMT_I17;
  					break;
  				}
  			} else {
  				switch (FIELD(bits, 12, 2)) { /* c + y */
  				case 0x0:
  					op = ASM_OP_TBIT_Z_AND,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x1:
  					op = ASM_OP_TBIT_NZ_AND,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x2:
  					op = ASM_OP_TNAT_Z_AND,
  					    fmt = ASM_FMT_I17;
  					break;
  				case 0x3:
  					op = ASM_OP_TNAT_NZ_AND,
  					    fmt = ASM_FMT_I17;
  					break;
  				}
  			}
  			break;
  		case 0x1:
  			if (FIELD(bits, 36, 1) == 0) { /* tb */
  				switch (FIELD(bits, 12, 2)) { /* c + y */
  				case 0x0:
  					op = ASM_OP_TBIT_Z_OR,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x1:
  					op = ASM_OP_TBIT_NZ_OR,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x2:
  					op = ASM_OP_TNAT_Z_OR,
  					    fmt = ASM_FMT_I17;
  					break;
  				case 0x3:
  					op = ASM_OP_TNAT_NZ_OR,
  					    fmt = ASM_FMT_I17;
  					break;
  				}
  			} else {
  				switch (FIELD(bits, 12, 2)) { /* c + y */
  				case 0x0:
  					op = ASM_OP_TBIT_Z_OR_ANDCM,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x1:
  					op = ASM_OP_TBIT_NZ_OR_ANDCM,
  					    fmt = ASM_FMT_I16;
  					break;
  				case 0x2:
  					op = ASM_OP_TNAT_Z_OR_ANDCM,
  					    fmt = ASM_FMT_I17;
  					break;
  				case 0x3:
  					op = ASM_OP_TNAT_NZ_OR_ANDCM,
  					    fmt = ASM_FMT_I17;
  					break;
  				}
  			}
  			break;
  		case 0x2:
  			op = ASM_OP_EXTR, fmt = ASM_FMT_I11;
  			break;
  		case 0x3:
  			if (FIELD(bits, 26, 1) == 0) /* y */
  				op = ASM_OP_DEP_Z, fmt = ASM_FMT_I12;
  			else
  				op = ASM_OP_DEP_Z, fmt = ASM_FMT_I13;
  			break;
  		case 0x6:
  			op = ASM_OP_SHRP, fmt = ASM_FMT_I10;
  			break;
  		case 0x7:
  			op = ASM_OP_DEP_, fmt = ASM_FMT_I14;
  			break;
  		}
  		break;
  	case 0x7:
  		switch (FIELD(bits, 32, 5)) { /* ve + zb + x2a + za */
  		case 0x2:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x0:
  				op = ASM_OP_PSHR2_U, fmt = ASM_FMT_I5;
  				break;
  			case 0x1: case 0x5: case 0x9: case 0xD:
  				op = ASM_OP_PMPYSHR2_U, fmt = ASM_FMT_I1;
  				break;
  			case 0x2:
  				op = ASM_OP_PSHR2_, fmt = ASM_FMT_I5;
  				break;
  			case 0x3: case 0x7: case 0xB: case 0xF:
  				op = ASM_OP_PMPYSHR2_, fmt = ASM_FMT_I1;
  				break;
  			case 0x4:
  				op = ASM_OP_PSHL2, fmt = ASM_FMT_I7;
  				break;
  			}
  			break;
  		case 0x6:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x1:
  				op = ASM_OP_PSHR2_U, fmt = ASM_FMT_I6;
  				break;
  			case 0x3:
  				op = ASM_OP_PSHR2_, fmt = ASM_FMT_I6;
  				break;
  			case 0x9:
  				op = ASM_OP_POPCNT, fmt = ASM_FMT_I9;
  				break;
  			}
  			break;
  		case 0x8:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x1:
  				op = ASM_OP_PMIN1_U, fmt = ASM_FMT_I2;
  				break;
  			case 0x4:
  				op = ASM_OP_UNPACK1_H, fmt = ASM_FMT_I2;
  				break;
  			case 0x5:
  				op = ASM_OP_PMAX1_U, fmt = ASM_FMT_I2;
  				break;
  			case 0x6:
  				op = ASM_OP_UNPACK1_L, fmt = ASM_FMT_I2;
  				break;
  			case 0x8:
  				op = ASM_OP_MIX1_R, fmt = ASM_FMT_I2;
  				break;
  			case 0xA:
  				op = ASM_OP_MIX1_L, fmt = ASM_FMT_I2;
  				break;
  			case 0xB:
  				op = ASM_OP_PSAD1, fmt = ASM_FMT_I2;
  				break;
  			}
  			break;
  		case 0xA:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x0:
  				op = ASM_OP_PACK2_USS, fmt = ASM_FMT_I2;
  				break;
  			case 0x2:
  				op = ASM_OP_PACK2_SSS, fmt = ASM_FMT_I2;
  				break;
  			case 0x3:
  				op = ASM_OP_PMIN2, fmt = ASM_FMT_I2;
  				break;
  			case 0x4:
  				op = ASM_OP_UNPACK2_H, fmt = ASM_FMT_I2;
  				break;
  			case 0x6:
  				op = ASM_OP_UNPACK2_L, fmt = ASM_FMT_I2;
  				break;
  			case 0x7:
  				op = ASM_OP_PMAX2, fmt = ASM_FMT_I2;
  				break;
  			case 0x8:
  				op = ASM_OP_MIX2_R, fmt = ASM_FMT_I2;
  				break;
  			case 0xA:
  				op = ASM_OP_MIX2_L, fmt = ASM_FMT_I2;
  				break;
  			case 0xD:
  				op = ASM_OP_PMPY2_R, fmt = ASM_FMT_I2;
  				break;
  			case 0xF:
  				op = ASM_OP_PMPY2_L, fmt = ASM_FMT_I2;
  				break;
  			}
  			break;
  		case 0xC:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0xA:
  				op = ASM_OP_MUX1, fmt = ASM_FMT_I3;
  				break;
  			}
  			break;
  		case 0xE:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x5:
  				op = ASM_OP_PSHL2, fmt = ASM_FMT_I8;
  				break;
  			case 0xA:
  				op = ASM_OP_MUX2, fmt = ASM_FMT_I4;
  				break;
  			}
  			break;
  		case 0x10:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x0:
  				op = ASM_OP_PSHR4_U, fmt = ASM_FMT_I5;
  				break;
  			case 0x2:
  				op = ASM_OP_PSHR4_, fmt = ASM_FMT_I5;
  				break;
  			case 0x4:
  				op = ASM_OP_PSHL4, fmt = ASM_FMT_I7;
  				break;
  			}
  			break;
  		case 0x12:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x0:
  				op = ASM_OP_SHR_U, fmt = ASM_FMT_I5;
  				break;
  			case 0x2:
  				op = ASM_OP_SHR_, fmt = ASM_FMT_I5;
  				break;
  			case 0x4:
  				op = ASM_OP_SHL, fmt = ASM_FMT_I7;
  				break;
  			}
  			break;
  		case 0x14:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x1:
  				op = ASM_OP_PSHR4_U, fmt = ASM_FMT_I6;
  				break;
  			case 0x3:
  				op = ASM_OP_PSHR4_, fmt = ASM_FMT_I6;
  				break;
  			}
  			break;
  		case 0x18:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x2:
  				op = ASM_OP_PACK4_SSS, fmt = ASM_FMT_I2;
  				break;
  			case 0x4:
  				op = ASM_OP_UNPACK4_H, fmt = ASM_FMT_I2;
  				break;
  			case 0x6:
  				op = ASM_OP_UNPACK4_L, fmt = ASM_FMT_I2;
  				break;
  			case 0x8:
  				op = ASM_OP_MIX4_R, fmt = ASM_FMT_I2;
  				break;
  			case 0xA:
  				op = ASM_OP_MIX4_L, fmt = ASM_FMT_I2;
  				break;
  			}
  			break;
  		case 0x1C:
  			switch (FIELD(bits, 28, 4)) { /* x2b + x2c */
  			case 0x5:
  				op = ASM_OP_PSHL4, fmt = ASM_FMT_I8;
  				break;
  			}
  			break;
  		}
  		break;
  	}
  
  	if (op != ASM_OP_NONE)
  		return (asm_extract(op, fmt, bits, b, slot));
  	return (0);
  }
  
  /*
   * Decode M-unit instructions.
   */
  static int
  asm_decodeM(uint64_t ip, struct asm_bundle *b, int slot)
  {
  	uint64_t bits;
  	enum asm_fmt fmt;
  	enum asm_op op;
  
  	bits = SLOT(ip, slot);
  	if ((int)OPCODE(bits) >= 8)
  		return (asm_decodeA(bits, b, slot));
  	fmt = ASM_FMT_NONE, op = ASM_OP_NONE;
  
  	switch((int)OPCODE(bits)) {
  	case 0x0:
  		switch (FIELD(bits, 33, 3)) { /* x3 */
  		case 0x0:
  			switch (FIELD(bits, 27, 6)) { /* x6 (x4 + x2) */
  			case 0x0:
  				op = ASM_OP_BREAK_M, fmt = ASM_FMT_M37;
  				break;
  			case 0x1:
  				op = ASM_OP_NOP_M, fmt = ASM_FMT_M37;
  				break;
  			case 0x4: case 0x14: case 0x24: case 0x34:
  				op = ASM_OP_SUM, fmt = ASM_FMT_M44;
  				break;
  			case 0x5: case 0x15: case 0x25: case 0x35:
  				op = ASM_OP_RUM, fmt = ASM_FMT_M44;
  				break;
  			case 0x6: case 0x16: case 0x26: case 0x36:
  				op = ASM_OP_SSM, fmt = ASM_FMT_M44;
  				break;
  			case 0x7: case 0x17: case 0x27: case 0x37:
  				op = ASM_OP_RSM, fmt = ASM_FMT_M44;
  				break;
  			case 0xA:
  				op = ASM_OP_LOADRS, fmt = ASM_FMT_M25;
  				break;
  			case 0xC:
  				op = ASM_OP_FLUSHRS, fmt = ASM_FMT_M25;
  				break;
  			case 0x10:
  				op = ASM_OP_INVALA_, fmt = ASM_FMT_M24;
  				break;
  			case 0x12:
  				op = ASM_OP_INVALA_E, fmt = ASM_FMT_M26;
  				break;
  			case 0x13:
  				op = ASM_OP_INVALA_E, fmt = ASM_FMT_M27;
  				break;
  			case 0x20:
  				op = ASM_OP_FWB, fmt = ASM_FMT_M24;
  				break;
  			case 0x22:
  				op = ASM_OP_MF_, fmt = ASM_FMT_M24;
  				break;
  			case 0x23:
  				op = ASM_OP_MF_A, fmt = ASM_FMT_M24;
  				break;
  			case 0x28:
  				op = ASM_OP_MOV_M, fmt = ASM_FMT_M30;
  				break;
  			case 0x30:
  				op = ASM_OP_SRLZ_D, fmt = ASM_FMT_M24;
  				break;
  			case 0x31:
  				op = ASM_OP_SRLZ_I, fmt = ASM_FMT_M24;
  				break;
  			case 0x33:
  				op = ASM_OP_SYNC_I, fmt = ASM_FMT_M24;
  				break;
  			}
  			break;
  		case 0x4:
  			op = ASM_OP_CHK_A_NC, fmt = ASM_FMT_M22;
  			break;
  		case 0x5:
  			op = ASM_OP_CHK_A_CLR, fmt = ASM_FMT_M22;
  			break;
  		case 0x6:
  			op = ASM_OP_CHK_A_NC, fmt = ASM_FMT_M23;
  			break;
  		case 0x7:
  			op = ASM_OP_CHK_A_CLR, fmt = ASM_FMT_M23;
  			break;
  		}
  		break;
  	case 0x1:
  		switch (FIELD(bits, 33, 3)) { /* x3 */
  		case 0x0:
  			switch (FIELD(bits, 27, 6)) { /* x6 (x4 + x2) */
  			case 0x0:
  				op = ASM_OP_MOV_RR, fmt = ASM_FMT_M42;
  				break;
  			case 0x1:
  				op = ASM_OP_MOV_DBR, fmt = ASM_FMT_M42;
  				break;
  			case 0x2:
  				op = ASM_OP_MOV_IBR, fmt = ASM_FMT_M42;
  				break;
  			case 0x3:
  				op = ASM_OP_MOV_PKR, fmt = ASM_FMT_M42;
  				break;
  			case 0x4:
  				op = ASM_OP_MOV_PMC, fmt = ASM_FMT_M42;
  				break;
  			case 0x5:
  				op = ASM_OP_MOV_PMD, fmt = ASM_FMT_M42;
  				break;
  			case 0x6:
  				op = ASM_OP_MOV_MSR, fmt = ASM_FMT_M42;
  				break;
  			case 0x9:
  				op = ASM_OP_PTC_L, fmt = ASM_FMT_M45;
  				break;
  			case 0xA:
  				op = ASM_OP_PTC_G, fmt = ASM_FMT_M45;
  				break;
  			case 0xB:
  				op = ASM_OP_PTC_GA, fmt = ASM_FMT_M45;
  				break;
  			case 0xC:
  				op = ASM_OP_PTR_D, fmt = ASM_FMT_M45;
  				break;
  			case 0xD:
  				op = ASM_OP_PTR_I, fmt = ASM_FMT_M45;
  				break;
  			case 0xE:
  				op = ASM_OP_ITR_D, fmt = ASM_FMT_M42;
  				break;
  			case 0xF:
  				op = ASM_OP_ITR_I, fmt = ASM_FMT_M42;
  				break;
  			case 0x10:
  				op = ASM_OP_MOV_RR, fmt = ASM_FMT_M43;
  				break;
  			case 0x11:
  				op = ASM_OP_MOV_DBR, fmt = ASM_FMT_M43;
  				break;
  			case 0x12:
  				op = ASM_OP_MOV_IBR, fmt = ASM_FMT_M43;
  				break;
  			case 0x13:
  				op = ASM_OP_MOV_PKR, fmt = ASM_FMT_M43;
  				break;
  			case 0x14:
  				op = ASM_OP_MOV_PMC, fmt = ASM_FMT_M43;
  				break;
  			case 0x15:
  				op = ASM_OP_MOV_PMD, fmt = ASM_FMT_M43;
  				break;
  			case 0x16:
  				op = ASM_OP_MOV_MSR, fmt = ASM_FMT_M43;
  				break;
  			case 0x17:
  				op = ASM_OP_MOV_CPUID, fmt = ASM_FMT_M43;
  				break;
  			case 0x18:
  				op = ASM_OP_PROBE_R, fmt = ASM_FMT_M39;
  				break;
  			case 0x19:
  				op = ASM_OP_PROBE_W, fmt = ASM_FMT_M39;
  				break;
  			case 0x1A:
  				op = ASM_OP_THASH, fmt = ASM_FMT_M46;
  				break;
  			case 0x1B:
  				op = ASM_OP_TTAG, fmt = ASM_FMT_M46;
  				break;
  			case 0x1E:
  				op = ASM_OP_TPA, fmt = ASM_FMT_M46;
  				break;
  			case 0x1F:
  				op = ASM_OP_TAK, fmt = ASM_FMT_M46;
  				break;
  			case 0x21:
  				op = ASM_OP_MOV_PSR_UM, fmt = ASM_FMT_M36;
  				break;
  			case 0x22:
  				op = ASM_OP_MOV_M, fmt = ASM_FMT_M31;
  				break;
  			case 0x24:
  				op = ASM_OP_MOV_, fmt = ASM_FMT_M33;
  				break;
  			case 0x25:
  				op = ASM_OP_MOV_PSR, fmt = ASM_FMT_M36;
  				break;
  			case 0x29:
  				op = ASM_OP_MOV_PSR_UM, fmt = ASM_FMT_M35;
  				break;
  			case 0x2A:
  				op = ASM_OP_MOV_M, fmt = ASM_FMT_M29;
  				break;
  			case 0x2C:
  				op = ASM_OP_MOV_, fmt = ASM_FMT_M32;
  				break;
  			case 0x2D:
  				op = ASM_OP_MOV_PSR_L, fmt = ASM_FMT_M35;
  				break;
  			case 0x2E:
  				op = ASM_OP_ITC_D, fmt = ASM_FMT_M41;
  				break;
  			case 0x2F:
  				op = ASM_OP_ITC_I, fmt = ASM_FMT_M41;
  				break;
  			case 0x30:
  				if (FIELD(bits, 36, 1) == 0) /* x */
  					op = ASM_OP_FC_, fmt = ASM_FMT_M28;
  				else
  					op = ASM_OP_FC_I, fmt = ASM_FMT_M28;
  				break;
  			case 0x31:
  				op = ASM_OP_PROBE_RW_FAULT, fmt = ASM_FMT_M40;
  				break;
  			case 0x32:
  				op = ASM_OP_PROBE_R_FAULT, fmt = ASM_FMT_M40;
  				break;
  			case 0x33:
  				op = ASM_OP_PROBE_W_FAULT, fmt = ASM_FMT_M40;
  				break;
  			case 0x34:
  				op = ASM_OP_PTC_E, fmt = ASM_FMT_M28;
  				break;
  			case 0x38:
  				op = ASM_OP_PROBE_R, fmt = ASM_FMT_M38;
  				break;
  			case 0x39:
  				op = ASM_OP_PROBE_W, fmt = ASM_FMT_M38;
  				break;
  			}
  			break;
  		case 0x1:
  			op = ASM_OP_CHK_S_M, fmt = ASM_FMT_M20;
  			break;
  		case 0x3:
  			op = ASM_OP_CHK_S, fmt = ASM_FMT_M21;
  			break;
  		case 0x6:
  			op = ASM_OP_ALLOC, fmt = ASM_FMT_M34;
  			break;
  		}
  		break;
  	case 0x4:
  		if (FIELD(bits, 27, 1) == 0) { /* x */
  			switch (FIELD(bits, 30, 7)) { /* x6 + m */
  			case 0x0:
  				op = ASM_OP_LD1_, fmt = ASM_FMT_M1;
  				break;
  			case 0x1:
  				op = ASM_OP_LD2_, fmt = ASM_FMT_M1;
  				break;
  			case 0x2:
  				op = ASM_OP_LD4_, fmt = ASM_FMT_M1;
  				break;
  			case 0x3:
  				op = ASM_OP_LD8_, fmt = ASM_FMT_M1;
  				break;
  			case 0x4:
  				op = ASM_OP_LD1_S, fmt = ASM_FMT_M1;
  				break;
  			case 0x5:
  				op = ASM_OP_LD2_S, fmt = ASM_FMT_M1;
  				break;
  			case 0x6:
  				op = ASM_OP_LD4_S, fmt = ASM_FMT_M1;
  				break;
  			case 0x7:
  				op = ASM_OP_LD8_S, fmt = ASM_FMT_M1;
  				break;
  			case 0x8:
  				op = ASM_OP_LD1_A, fmt = ASM_FMT_M1;
  				break;
  			case 0x9:
  				op = ASM_OP_LD2_A, fmt = ASM_FMT_M1;
  				break;
  			case 0xA:
  				op = ASM_OP_LD4_A, fmt = ASM_FMT_M1;
  				break;
  			case 0xB:
  				op = ASM_OP_LD8_A, fmt = ASM_FMT_M1;
  				break;
  			case 0xC:
  				op = ASM_OP_LD1_SA, fmt = ASM_FMT_M1;
  				break;
  			case 0xD:
  				op = ASM_OP_LD2_SA, fmt = ASM_FMT_M1;
  				break;
  			case 0xE:
  				op = ASM_OP_LD4_SA, fmt = ASM_FMT_M1;
  				break;
  			case 0xF:
  				op = ASM_OP_LD8_SA, fmt = ASM_FMT_M1;
  				break;
  			case 0x10:
  				op = ASM_OP_LD1_BIAS, fmt = ASM_FMT_M1;
  				break;
  			case 0x11:
  				op = ASM_OP_LD2_BIAS, fmt = ASM_FMT_M1;
  				break;
  			case 0x12:
  				op = ASM_OP_LD4_BIAS, fmt = ASM_FMT_M1;
  				break;
  			case 0x13:
  				op = ASM_OP_LD8_BIAS, fmt = ASM_FMT_M1;
  				break;
  			case 0x14:
  				op = ASM_OP_LD1_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x15:
  				op = ASM_OP_LD2_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x16:
  				op = ASM_OP_LD4_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x17:
  				op = ASM_OP_LD8_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x1B:
  				op = ASM_OP_LD8_FILL, fmt = ASM_FMT_M1;
  				break;
  			case 0x20:
  				op = ASM_OP_LD1_C_CLR, fmt = ASM_FMT_M1;
  				break;
  			case 0x21:
  				op = ASM_OP_LD2_C_CLR, fmt = ASM_FMT_M1;
  				break;
  			case 0x22:
  				op = ASM_OP_LD4_C_CLR, fmt = ASM_FMT_M1;
  				break;
  			case 0x23:
  				op = ASM_OP_LD8_C_CLR, fmt = ASM_FMT_M1;
  				break;
  			case 0x24:
  				op = ASM_OP_LD1_C_NC, fmt = ASM_FMT_M1;
  				break;
  			case 0x25:
  				op = ASM_OP_LD2_C_NC, fmt = ASM_FMT_M1;
  				break;
  			case 0x26:
  				op = ASM_OP_LD4_C_NC, fmt = ASM_FMT_M1;
  				break;
  			case 0x27:
  				op = ASM_OP_LD8_C_NC, fmt = ASM_FMT_M1;
  				break;
  			case 0x28:
  				op = ASM_OP_LD1_C_CLR_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x29:
  				op = ASM_OP_LD2_C_CLR_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x2A:
  				op = ASM_OP_LD4_C_CLR_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x2B:
  				op = ASM_OP_LD8_C_CLR_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x30:
  				op = ASM_OP_ST1_, fmt = ASM_FMT_M4;
  				break;
  			case 0x31:
  				op = ASM_OP_ST2_, fmt = ASM_FMT_M4;
  				break;
  			case 0x32:
  				op = ASM_OP_ST4_, fmt = ASM_FMT_M4;
  				break;
  			case 0x33:
  				op = ASM_OP_ST8_, fmt = ASM_FMT_M4;
  				break;
  			case 0x34:
  				op = ASM_OP_ST1_REL, fmt = ASM_FMT_M4;
  				break;
  			case 0x35:
  				op = ASM_OP_ST2_REL, fmt = ASM_FMT_M4;
  				break;
  			case 0x36:
  				op = ASM_OP_ST4_REL, fmt = ASM_FMT_M4;
  				break;
  			case 0x37:
  				op = ASM_OP_ST8_REL, fmt = ASM_FMT_M4;
  				break;
  			case 0x3B:
  				op = ASM_OP_ST8_SPILL, fmt = ASM_FMT_M4;
  				break;
  			case 0x40:
  				op = ASM_OP_LD1_, fmt = ASM_FMT_M2;
  				break;
  			case 0x41:
  				op = ASM_OP_LD2_, fmt = ASM_FMT_M2;
  				break;
  			case 0x42:
  				op = ASM_OP_LD4_, fmt = ASM_FMT_M2;
  				break;
  			case 0x43:
  				op = ASM_OP_LD8_, fmt = ASM_FMT_M2;
  				break;
  			case 0x44:
  				op = ASM_OP_LD1_S, fmt = ASM_FMT_M2;
  				break;
  			case 0x45:
  				op = ASM_OP_LD2_S, fmt = ASM_FMT_M2;
  				break;
  			case 0x46:
  				op = ASM_OP_LD4_S, fmt = ASM_FMT_M2;
  				break;
  			case 0x47:
  				op = ASM_OP_LD8_S, fmt = ASM_FMT_M2;
  				break;
  			case 0x48:
  				op = ASM_OP_LD1_A, fmt = ASM_FMT_M2;
  				break;
  			case 0x49:
  				op = ASM_OP_LD2_A, fmt = ASM_FMT_M2;
  				break;
  			case 0x4A:
  				op = ASM_OP_LD4_A, fmt = ASM_FMT_M2;
  				break;
  			case 0x4B:
  				op = ASM_OP_LD8_A, fmt = ASM_FMT_M2;
  				break;
  			case 0x4C:
  				op = ASM_OP_LD1_SA, fmt = ASM_FMT_M2;
  				break;
  			case 0x4D:
  				op = ASM_OP_LD2_SA, fmt = ASM_FMT_M2;
  				break;
  			case 0x4E:
  				op = ASM_OP_LD4_SA, fmt = ASM_FMT_M2;
  				break;
  			case 0x4F:
  				op = ASM_OP_LD8_SA, fmt = ASM_FMT_M2;
  				break;
  			case 0x50:
  				op = ASM_OP_LD1_BIAS, fmt = ASM_FMT_M2;
  				break;
  			case 0x51:
  				op = ASM_OP_LD2_BIAS, fmt = ASM_FMT_M2;
  				break;
  			case 0x52:
  				op = ASM_OP_LD4_BIAS, fmt = ASM_FMT_M2;
  				break;
  			case 0x53:
  				op = ASM_OP_LD8_BIAS, fmt = ASM_FMT_M2;
  				break;
  			case 0x54:
  				op = ASM_OP_LD1_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x55:
  				op = ASM_OP_LD2_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x56:
  				op = ASM_OP_LD4_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x57:
  				op = ASM_OP_LD8_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x5B:
  				op = ASM_OP_LD8_FILL, fmt = ASM_FMT_M2;
  				break;
  			case 0x60:
  				op = ASM_OP_LD1_C_CLR, fmt = ASM_FMT_M2;
  				break;
  			case 0x61:
  				op = ASM_OP_LD2_C_CLR, fmt = ASM_FMT_M2;
  				break;
  			case 0x62:
  				op = ASM_OP_LD4_C_CLR, fmt = ASM_FMT_M2;
  				break;
  			case 0x63:
  				op = ASM_OP_LD8_C_CLR, fmt = ASM_FMT_M2;
  				break;
  			case 0x64:
  				op = ASM_OP_LD1_C_NC, fmt = ASM_FMT_M2;
  				break;
  			case 0x65:
  				op = ASM_OP_LD2_C_NC, fmt = ASM_FMT_M2;
  				break;
  			case 0x66:
  				op = ASM_OP_LD4_C_NC, fmt = ASM_FMT_M2;
  				break;
  			case 0x67:
  				op = ASM_OP_LD8_C_NC, fmt = ASM_FMT_M2;
  				break;
  			case 0x68:
  				op = ASM_OP_LD1_C_CLR_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x69:
  				op = ASM_OP_LD2_C_CLR_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x6A:
  				op = ASM_OP_LD4_C_CLR_ACQ, fmt = ASM_FMT_M2;
  				break;
  			case 0x6B:
  				op = ASM_OP_LD8_C_CLR_ACQ, fmt = ASM_FMT_M2;
  				break;
  			}
  		} else {
  			switch (FIELD(bits, 30, 7)) { /* x6 + m */
  			case 0x0:
  				op = ASM_OP_CMPXCHG1_ACQ, fmt = ASM_FMT_M16;
  				break;
  			case 0x1:
  				op = ASM_OP_CMPXCHG2_ACQ, fmt = ASM_FMT_M16;
  				break;
  			case 0x2:
  				op = ASM_OP_CMPXCHG4_ACQ, fmt = ASM_FMT_M16;
  				break;
  			case 0x3:
  				op = ASM_OP_CMPXCHG8_ACQ, fmt = ASM_FMT_M16;
  				break;
  			case 0x4:
  				op = ASM_OP_CMPXCHG1_REL, fmt = ASM_FMT_M16;
  				break;
  			case 0x5:
  				op = ASM_OP_CMPXCHG2_REL, fmt = ASM_FMT_M16;
  				break;
  			case 0x6:
  				op = ASM_OP_CMPXCHG4_REL, fmt = ASM_FMT_M16;
  				break;
  			case 0x7:
  				op = ASM_OP_CMPXCHG8_REL, fmt = ASM_FMT_M16;
  				break;
  			case 0x8:
  				op = ASM_OP_XCHG1, fmt = ASM_FMT_M16;
  				break;
  			case 0x9:
  				op = ASM_OP_XCHG2, fmt = ASM_FMT_M16;
  				break;
  			case 0xA:
  				op = ASM_OP_XCHG4, fmt = ASM_FMT_M16;
  				break;
  			case 0xB:
  				op = ASM_OP_XCHG8, fmt = ASM_FMT_M16;
  				break;
  			case 0x12:
  				op = ASM_OP_FETCHADD4_ACQ, fmt = ASM_FMT_M17;
  				break;
  			case 0x13:
  				op = ASM_OP_FETCHADD8_ACQ, fmt = ASM_FMT_M17;
  				break;
  			case 0x16:
  				op = ASM_OP_FETCHADD4_REL, fmt = ASM_FMT_M17;
  				break;
  			case 0x17:
  				op = ASM_OP_FETCHADD8_REL, fmt = ASM_FMT_M17;
  				break;
  			case 0x1C:
  				op = ASM_OP_GETF_SIG, fmt = ASM_FMT_M19;
  				break;
  			case 0x1D:
  				op = ASM_OP_GETF_EXP, fmt = ASM_FMT_M19;
  				break;
  			case 0x1E:
  				op = ASM_OP_GETF_S, fmt = ASM_FMT_M19;
  				break;
  			case 0x1F:
  				op = ASM_OP_GETF_D, fmt = ASM_FMT_M19;
  				break;
  			case 0x20:
  				op = ASM_OP_CMP8XCHG16_ACQ, fmt = ASM_FMT_M16;
  				break;
  			case 0x24:
  				op = ASM_OP_CMP8XCHG16_REL, fmt = ASM_FMT_M16;
  				break;
  			case 0x28:
  				op = ASM_OP_LD16_, fmt = ASM_FMT_M1;
  				break;
  			case 0x2C:
  				op = ASM_OP_LD16_ACQ, fmt = ASM_FMT_M1;
  				break;
  			case 0x30:
  				op = ASM_OP_ST16_, fmt = ASM_FMT_M4;
  				break;
  			case 0x34:
  				op = ASM_OP_ST16_REL, fmt = ASM_FMT_M4;
  				break;
  			}
  		}
  		break;
  	case 0x5:
  		switch (FIELD(bits, 30, 6)) { /* x6 */
  		case 0x0:
  			op = ASM_OP_LD1_, fmt = ASM_FMT_M3;
  			break;
  		case 0x1:
  			op = ASM_OP_LD2_, fmt = ASM_FMT_M3;
  			break;
  		case 0x2:
  			op = ASM_OP_LD4_, fmt = ASM_FMT_M3;
  			break;
  		case 0x3:
  			op = ASM_OP_LD8_, fmt = ASM_FMT_M3;
  			break;
  		case 0x4:
  			op = ASM_OP_LD1_S, fmt = ASM_FMT_M3;
  			break;
  		case 0x5:
  			op = ASM_OP_LD2_S, fmt = ASM_FMT_M3;
  			break;
  		case 0x6:
  			op = ASM_OP_LD4_S, fmt = ASM_FMT_M3;
  			break;
  		case 0x7:
  			op = ASM_OP_LD8_S, fmt = ASM_FMT_M3;
  			break;
  		case 0x8:
  			op = ASM_OP_LD1_A, fmt = ASM_FMT_M3;
  			break;
  		case 0x9:
  			op = ASM_OP_LD2_A, fmt = ASM_FMT_M3;
  			break;
  		case 0xA:
  			op = ASM_OP_LD4_A, fmt = ASM_FMT_M3;
  			break;
  		case 0xB:
  			op = ASM_OP_LD8_A, fmt = ASM_FMT_M3;
  			break;
  		case 0xC:
  			op = ASM_OP_LD1_SA, fmt = ASM_FMT_M3;
  			break;
  		case 0xD:
  			op = ASM_OP_LD2_SA, fmt = ASM_FMT_M3;
  			break;
  		case 0xE:
  			op = ASM_OP_LD4_SA, fmt = ASM_FMT_M3;
  			break;
  		case 0xF:
  			op = ASM_OP_LD8_SA, fmt = ASM_FMT_M3;
  			break;
  		case 0x10:
  			op = ASM_OP_LD1_BIAS, fmt = ASM_FMT_M3;
  			break;
  		case 0x11:
  			op = ASM_OP_LD2_BIAS, fmt = ASM_FMT_M3;
  			break;
  		case 0x12:
  			op = ASM_OP_LD4_BIAS, fmt = ASM_FMT_M3;
  			break;
  		case 0x13:
  			op = ASM_OP_LD8_BIAS, fmt = ASM_FMT_M3;
  			break;
  		case 0x14:
  			op = ASM_OP_LD1_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x15:
  			op = ASM_OP_LD2_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x16:
  			op = ASM_OP_LD4_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x17:
  			op = ASM_OP_LD8_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x1B:
  			op = ASM_OP_LD8_FILL, fmt = ASM_FMT_M3;
  			break;
  		case 0x20:
  			op = ASM_OP_LD1_C_CLR, fmt = ASM_FMT_M3;
  			break;
  		case 0x21:
  			op = ASM_OP_LD2_C_CLR, fmt = ASM_FMT_M3;
  			break;
  		case 0x22:
  			op = ASM_OP_LD4_C_CLR, fmt = ASM_FMT_M3;
  			break;
  		case 0x23:
  			op = ASM_OP_LD8_C_CLR, fmt = ASM_FMT_M3;
  			break;
  		case 0x24:
  			op = ASM_OP_LD1_C_NC, fmt = ASM_FMT_M3;
  			break;
  		case 0x25:
  			op = ASM_OP_LD2_C_NC, fmt = ASM_FMT_M3;
  			break;
  		case 0x26:
  			op = ASM_OP_LD4_C_NC, fmt = ASM_FMT_M3;
  			break;
  		case 0x27:
  			op = ASM_OP_LD8_C_NC, fmt = ASM_FMT_M3;
  			break;
  		case 0x28:
  			op = ASM_OP_LD1_C_CLR_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x29:
  			op = ASM_OP_LD2_C_CLR_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x2A:
  			op = ASM_OP_LD4_C_CLR_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x2B:
  			op = ASM_OP_LD8_C_CLR_ACQ, fmt = ASM_FMT_M3;
  			break;
  		case 0x30:
  			op = ASM_OP_ST1_, fmt = ASM_FMT_M5;
  			break;
  		case 0x31:
  			op = ASM_OP_ST2_, fmt = ASM_FMT_M5;
  			break;
  		case 0x32:
  			op = ASM_OP_ST4_, fmt = ASM_FMT_M5;
  			break;
  		case 0x33:
  			op = ASM_OP_ST8_, fmt = ASM_FMT_M5;
  			break;
  		case 0x34:
  			op = ASM_OP_ST1_REL, fmt = ASM_FMT_M5;
  			break;
  		case 0x35:
  			op = ASM_OP_ST2_REL, fmt = ASM_FMT_M5;
  			break;
  		case 0x36:
  			op = ASM_OP_ST4_REL, fmt = ASM_FMT_M5;
  			break;
  		case 0x37:
  			op = ASM_OP_ST8_REL, fmt = ASM_FMT_M5;
  			break;
  		case 0x3B:
  			op = ASM_OP_ST8_SPILL, fmt = ASM_FMT_M5;
  			break;
  		}
  		break;
  	case 0x6:
  		if (FIELD(bits, 27, 1) == 0) { /* x */
  			switch (FIELD(bits, 30, 7)) { /* x6 + m */
  			case 0x0:
  				op = ASM_OP_LDFE_, fmt = ASM_FMT_M6;
  				break;
  			case 0x1:
  				op = ASM_OP_LDF8_, fmt = ASM_FMT_M6;
  				break;
  			case 0x2:
  				op = ASM_OP_LDFS_, fmt = ASM_FMT_M6;
  				break;
  			case 0x3:
  				op = ASM_OP_LDFD_, fmt = ASM_FMT_M6;
  				break;
  			case 0x4:
  				op = ASM_OP_LDFE_S, fmt = ASM_FMT_M6;
  				break;
  			case 0x5:
  				op = ASM_OP_LDF8_S, fmt = ASM_FMT_M6;
  				break;
  			case 0x6:
  				op = ASM_OP_LDFS_S, fmt = ASM_FMT_M6;
  				break;
  			case 0x7:
  				op = ASM_OP_LDFD_S, fmt = ASM_FMT_M6;
  				break;
  			case 0x8:
  				op = ASM_OP_LDFE_A, fmt = ASM_FMT_M6;
  				break;
  			case 0x9:
  				op = ASM_OP_LDF8_A, fmt = ASM_FMT_M6;
  				break;
  			case 0xA:
  				op = ASM_OP_LDFS_A, fmt = ASM_FMT_M6;
  				break;
  			case 0xB:
  				op = ASM_OP_LDFD_A, fmt = ASM_FMT_M6;
  				break;
  			case 0xC:
  				op = ASM_OP_LDFE_SA, fmt = ASM_FMT_M6;
  				break;
  			case 0xD:
  				op = ASM_OP_LDF8_SA, fmt = ASM_FMT_M6;
  				break;
  			case 0xE:
  				op = ASM_OP_LDFS_SA, fmt = ASM_FMT_M6;
  				break;
  			case 0xF:
  				op = ASM_OP_LDFD_SA, fmt = ASM_FMT_M6;
  				break;
  			case 0x1B:
  				op = ASM_OP_LDF_FILL, fmt = ASM_FMT_M6;
  				break;
  			case 0x20:
  				op = ASM_OP_LDFE_C_CLR, fmt = ASM_FMT_M6;
  				break;
  			case 0x21:
  				op = ASM_OP_LDF8_C_CLR, fmt = ASM_FMT_M6;
  				break;
  			case 0x22:
  				op = ASM_OP_LDFS_C_CLR, fmt = ASM_FMT_M6;
  				break;
  			case 0x23:
  				op = ASM_OP_LDFD_C_CLR, fmt = ASM_FMT_M6;
  				break;
  			case 0x24:
  				op = ASM_OP_LDFE_C_NC, fmt = ASM_FMT_M6;
  				break;
  			case 0x25:
  				op = ASM_OP_LDF8_C_NC, fmt = ASM_FMT_M6;
  				break;
  			case 0x26:
  				op = ASM_OP_LDFS_C_NC, fmt = ASM_FMT_M6;
  				break;
  			case 0x27:
  				op = ASM_OP_LDFD_C_NC, fmt = ASM_FMT_M6;
  				break;
  			case 0x2C:
  				op = ASM_OP_LFETCH_, fmt = ASM_FMT_M13;
  				break;
  			case 0x2D:
  				op = ASM_OP_LFETCH_EXCL, fmt = ASM_FMT_M13;
  				break;
  			case 0x2E:
  				op = ASM_OP_LFETCH_FAULT, fmt = ASM_FMT_M13;
  				break;
  			case 0x2F:
  				op = ASM_OP_LFETCH_FAULT_EXCL,
  				    fmt = ASM_FMT_M13;
  				break;
  			case 0x30:
  				op = ASM_OP_STFE, fmt = ASM_FMT_M9;
  				break;
  			case 0x31:
  				op = ASM_OP_STF8, fmt = ASM_FMT_M9;
  				break;
  			case 0x32:
  				op = ASM_OP_STFS, fmt = ASM_FMT_M9;
  				break;
  			case 0x33:
  				op = ASM_OP_STFD, fmt = ASM_FMT_M9;
  				break;
  			case 0x3B:
  				op = ASM_OP_STF_SPILL, fmt = ASM_FMT_M9;
  				break;
  			case 0x40:
  				op = ASM_OP_LDFE_, fmt = ASM_FMT_M7;
  				break;
  			case 0x41:
  				op = ASM_OP_LDF8_, fmt = ASM_FMT_M7;
  				break;
  			case 0x42:
  				op = ASM_OP_LDFS_, fmt = ASM_FMT_M7;
  				break;
  			case 0x43:
  				op = ASM_OP_LDFD_, fmt = ASM_FMT_M7;
  				break;
  			case 0x44:
  				op = ASM_OP_LDFE_S, fmt = ASM_FMT_M7;
  				break;
  			case 0x45:
  				op = ASM_OP_LDF8_S, fmt = ASM_FMT_M7;
  				break;
  			case 0x46:
  				op = ASM_OP_LDFS_S, fmt = ASM_FMT_M7;
  				break;
  			case 0x47:
  				op = ASM_OP_LDFD_S, fmt = ASM_FMT_M7;
  				break;
  			case 0x48:
  				op = ASM_OP_LDFE_A, fmt = ASM_FMT_M7;
  				break;
  			case 0x49:
  				op = ASM_OP_LDF8_A, fmt = ASM_FMT_M7;
  				break;
  			case 0x4A:
  				op = ASM_OP_LDFS_A, fmt = ASM_FMT_M7;
  				break;
  			case 0x4B:
  				op = ASM_OP_LDFD_A, fmt = ASM_FMT_M7;
  				break;
  			case 0x4C:
  				op = ASM_OP_LDFE_SA, fmt = ASM_FMT_M7;
  				break;
  			case 0x4D:
  				op = ASM_OP_LDF8_SA, fmt = ASM_FMT_M7;
  				break;
  			case 0x4E:
  				op = ASM_OP_LDFS_SA, fmt = ASM_FMT_M7;
  				break;
  			case 0x4F:
  				op = ASM_OP_LDFD_SA, fmt = ASM_FMT_M7;
  				break;
  			case 0x5B:
  				op = ASM_OP_LDF_FILL, fmt = ASM_FMT_M7;
  				break;
  			case 0x60:
  				op = ASM_OP_LDFE_C_CLR, fmt = ASM_FMT_M7;
  				break;
  			case 0x61:
  				op = ASM_OP_LDF8_C_CLR, fmt = ASM_FMT_M7;
  				break;
  			case 0x62:
  				op = ASM_OP_LDFS_C_CLR, fmt = ASM_FMT_M7;
  				break;
  			case 0x63:
  				op = ASM_OP_LDFD_C_CLR, fmt = ASM_FMT_M7;
  				break;
  			case 0x64:
  				op = ASM_OP_LDFE_C_NC, fmt = ASM_FMT_M7;
  				break;
  			case 0x65:
  				op = ASM_OP_LDF8_C_NC, fmt = ASM_FMT_M7;
  				break;
  			case 0x66:
  				op = ASM_OP_LDFS_C_NC, fmt = ASM_FMT_M7;
  				break;
  			case 0x67:
  				op = ASM_OP_LDFD_C_NC, fmt = ASM_FMT_M7;
  				break;
  			case 0x6C:
  				op = ASM_OP_LFETCH_, fmt = ASM_FMT_M14;
  				break;
  			case 0x6D:
  				op = ASM_OP_LFETCH_EXCL, fmt = ASM_FMT_M14;
  				break;
  			case 0x6E:
  				op = ASM_OP_LFETCH_FAULT, fmt = ASM_FMT_M14;
  				break;
  			case 0x6F:
  				op = ASM_OP_LFETCH_FAULT_EXCL,
  				    fmt = ASM_FMT_M14;
  				break;
  			}
  		} else {
  			switch (FIELD(bits, 30, 7)) { /* x6 + m */
  			case 0x1:
  				op = ASM_OP_LDFP8_, fmt = ASM_FMT_M11;
  				break;
  			case 0x2:
  				op = ASM_OP_LDFPS_, fmt = ASM_FMT_M11;
  				break;
  			case 0x3:
  				op = ASM_OP_LDFPD_, fmt = ASM_FMT_M11;
  				break;
  			case 0x5:
  				op = ASM_OP_LDFP8_S, fmt = ASM_FMT_M11;
  				break;
  			case 0x6:
  				op = ASM_OP_LDFPS_S, fmt = ASM_FMT_M11;
  				break;
  			case 0x7:
  				op = ASM_OP_LDFPD_S, fmt = ASM_FMT_M11;
  				break;
  			case 0x9:
  				op = ASM_OP_LDFP8_A, fmt = ASM_FMT_M11;
  				break;
  			case 0xA:
  				op = ASM_OP_LDFPS_A, fmt = ASM_FMT_M11;
  				break;
  			case 0xB:
  				op = ASM_OP_LDFPD_A, fmt = ASM_FMT_M11;
  				break;
  			case 0xD:
  				op = ASM_OP_LDFP8_SA, fmt = ASM_FMT_M11;
  				break;
  			case 0xE:
  				op = ASM_OP_LDFPS_SA, fmt = ASM_FMT_M11;
  				break;
  			case 0xF:
  				op = ASM_OP_LDFPD_SA, fmt = ASM_FMT_M11;
  				break;
  			case 0x1C:
  				op = ASM_OP_SETF_SIG, fmt = ASM_FMT_M18;
  				break;
  			case 0x1D:
  				op = ASM_OP_SETF_EXP, fmt = ASM_FMT_M18;
  				break;
  			case 0x1E:
  				op = ASM_OP_SETF_S, fmt = ASM_FMT_M18;
  				break;
  			case 0x1F:
  				op = ASM_OP_SETF_D, fmt = ASM_FMT_M18;
  				break;
  			case 0x21:
  				op = ASM_OP_LDFP8_C_CLR, fmt = ASM_FMT_M11;
  				break;
  			case 0x22:
  				op = ASM_OP_LDFPS_C_CLR, fmt = ASM_FMT_M11;
  				break;
  			case 0x23:
  				op = ASM_OP_LDFPD_C_CLR, fmt = ASM_FMT_M11;
  				break;
  			case 0x25:
  				op = ASM_OP_LDFP8_C_NC, fmt = ASM_FMT_M11;
  				break;
  			case 0x26:
  				op = ASM_OP_LDFPS_C_NC, fmt = ASM_FMT_M11;
  				break;
  			case 0x27:
  				op = ASM_OP_LDFPD_C_NC, fmt = ASM_FMT_M11;
  				break;
  			case 0x41:
  				op = ASM_OP_LDFP8_, fmt = ASM_FMT_M12;
  				break;
  			case 0x42:
  				op = ASM_OP_LDFPS_, fmt = ASM_FMT_M12;
  				break;
  			case 0x43:
  				op = ASM_OP_LDFPD_, fmt = ASM_FMT_M12;
  				break;
  			case 0x45:
  				op = ASM_OP_LDFP8_S, fmt = ASM_FMT_M12;
  				break;
  			case 0x46:
  				op = ASM_OP_LDFPS_S, fmt = ASM_FMT_M12;
  				break;
  			case 0x47:
  				op = ASM_OP_LDFPD_S, fmt = ASM_FMT_M12;
  				break;
  			case 0x49:
  				op = ASM_OP_LDFP8_A, fmt = ASM_FMT_M12;
  				break;
  			case 0x4A:
  				op = ASM_OP_LDFPS_A, fmt = ASM_FMT_M12;
  				break;
  			case 0x4B:
  				op = ASM_OP_LDFPD_A, fmt = ASM_FMT_M12;
  				break;
  			case 0x4D:
  				op = ASM_OP_LDFP8_SA, fmt = ASM_FMT_M12;
  				break;
  			case 0x4E:
  				op = ASM_OP_LDFPS_SA, fmt = ASM_FMT_M12;
  				break;
  			case 0x4F:
  				op = ASM_OP_LDFPD_SA, fmt = ASM_FMT_M12;
  				break;
  			case 0x61:
  				op = ASM_OP_LDFP8_C_CLR, fmt = ASM_FMT_M12;
  				break;
  			case 0x62:
  				op = ASM_OP_LDFPS_C_CLR, fmt = ASM_FMT_M12;
  				break;
  			case 0x63:
  				op = ASM_OP_LDFPD_C_CLR, fmt = ASM_FMT_M12;
  				break;
  			case 0x65:
  				op = ASM_OP_LDFP8_C_NC, fmt = ASM_FMT_M12;
  				break;
  			case 0x66:
  				op = ASM_OP_LDFPS_C_NC, fmt = ASM_FMT_M12;
  				break;
  			case 0x67:
  				op = ASM_OP_LDFPD_C_NC, fmt = ASM_FMT_M12;
  				break;
  			}
  		}
  		break;
  	case 0x7:
  		switch (FIELD(bits, 30, 6)) { /* x6 */
  		case 0x0:
  			op = ASM_OP_LDFE_, fmt = ASM_FMT_M8;
  			break;
  		case 0x1:
  			op = ASM_OP_LDF8_, fmt = ASM_FMT_M8;
  			break;
  		case 0x2:
  			op = ASM_OP_LDFS_, fmt = ASM_FMT_M8;
  			break;
  		case 0x3:
  			op = ASM_OP_LDFD_, fmt = ASM_FMT_M8;
  			break;
  		case 0x4:
  			op = ASM_OP_LDFE_S, fmt = ASM_FMT_M8;
  			break;
  		case 0x5:
  			op = ASM_OP_LDF8_S, fmt = ASM_FMT_M8;
  			break;
  		case 0x6:
  			op = ASM_OP_LDFS_S, fmt = ASM_FMT_M8;
  			break;
  		case 0x7:
  			op = ASM_OP_LDFD_S, fmt = ASM_FMT_M8;
  			break;
  		case 0x8:
  			op = ASM_OP_LDFE_A, fmt = ASM_FMT_M8;
  			break;
  		case 0x9:
  			op = ASM_OP_LDF8_A, fmt = ASM_FMT_M8;
  			break;
  		case 0xA:
  			op = ASM_OP_LDFS_A, fmt = ASM_FMT_M8;
  			break;
  		case 0xB:
  			op = ASM_OP_LDFD_A, fmt = ASM_FMT_M8;
  			break;
  		case 0xC:
  			op = ASM_OP_LDFE_SA, fmt = ASM_FMT_M8;
  			break;
  		case 0xD:
  			op = ASM_OP_LDF8_SA, fmt = ASM_FMT_M8;
  			break;
  		case 0xE:
  			op = ASM_OP_LDFS_SA, fmt = ASM_FMT_M8;
  			break;
  		case 0xF:
  			op = ASM_OP_LDFD_SA, fmt = ASM_FMT_M8;
  			break;
  		case 0x1B:
  			op = ASM_OP_LDF_FILL, fmt = ASM_FMT_M8;
  			break;
  		case 0x20:
  			op = ASM_OP_LDFE_C_CLR, fmt = ASM_FMT_M8;
  			break;
  		case 0x21:
  			op = ASM_OP_LDF8_C_CLR, fmt = ASM_FMT_M8;
  			break;
  		case 0x22:
  			op = ASM_OP_LDFS_C_CLR, fmt = ASM_FMT_M8;
  			break;
  		case 0x23:
  			op = ASM_OP_LDFD_C_CLR, fmt = ASM_FMT_M8;
  			break;
  		case 0x24:
  			op = ASM_OP_LDFE_C_NC, fmt = ASM_FMT_M8;
  			break;
  		case 0x25:
  			op = ASM_OP_LDF8_C_NC, fmt = ASM_FMT_M8;
  			break;
  		case 0x26:
  			op = ASM_OP_LDFS_C_NC, fmt = ASM_FMT_M8;
  			break;
  		case 0x27:
  			op = ASM_OP_LDFD_C_NC, fmt = ASM_FMT_M8;
  			break;
  		case 0x2C:
  			op = ASM_OP_LFETCH_, fmt = ASM_FMT_M15;
  			break;
  		case 0x2D:
  			op = ASM_OP_LFETCH_EXCL, fmt = ASM_FMT_M15;
  			break;
  		case 0x2E:
  			op = ASM_OP_LFETCH_FAULT, fmt = ASM_FMT_M15;
  			break;
  		case 0x2F:
  			op = ASM_OP_LFETCH_FAULT_EXCL, fmt = ASM_FMT_M15;
  			break;
  		case 0x30:
  			op = ASM_OP_STFE, fmt = ASM_FMT_M10;
  			break;
  		case 0x31:
  			op = ASM_OP_STF8, fmt = ASM_FMT_M10;
  			break;
  		case 0x32:
  			op = ASM_OP_STFS, fmt = ASM_FMT_M10;
  			break;
  		case 0x33:
  			op = ASM_OP_STFD, fmt = ASM_FMT_M10;
  			break;
  		case 0x3B:
  			op = ASM_OP_STF_SPILL, fmt = ASM_FMT_M10;
  			break;
  		}
  		break;
  	}
  
  	if (op != ASM_OP_NONE)
  		return (asm_extract(op, fmt, bits, b, slot));
  	return (0);
  }
  
  /*
   * Decode X-unit instructions.
   */
  static int
  asm_decodeX(uint64_t ip, struct asm_bundle *b, int slot)
  {
  	uint64_t bits;
  	enum asm_fmt fmt;
  	enum asm_op op;
  
  	KASSERT(slot == 2, ("foo"));
  	bits = SLOT(ip, slot);
  	fmt = ASM_FMT_NONE, op = ASM_OP_NONE;
  	/* Initialize slot 1 (slot - 1) */
  	b->b_inst[slot - 1].i_format = ASM_FMT_NONE;
  	b->b_inst[slot - 1].i_bits = SLOT(ip, slot - 1);
  
  	switch((int)OPCODE(bits)) {
  	case 0x0:
  		if (FIELD(bits, 33, 3) == 0) { /* x3 */
  			switch (FIELD(bits, 27, 6)) { /* x6 */
  			case 0x0:
  				op = ASM_OP_BREAK_X, fmt = ASM_FMT_X1;
  				break;
  			case 0x1:
  				op = ASM_OP_NOP_X, fmt = ASM_FMT_X1;
  				break;
  			}
  		}
  		break;
  	case 0x6:
  		if (FIELD(bits, 20, 1) == 0)
  			op = ASM_OP_MOVL, fmt = ASM_FMT_X2;
  		break;
  	case 0xC:
  		if (FIELD(bits, 6, 3) == 0) /* btype */
  			op = ASM_OP_BRL_COND, fmt = ASM_FMT_X3;
  		break;
  	case 0xD:
  		op = ASM_OP_BRL_CALL, fmt = ASM_FMT_X4;
  		break;
  	}
  
  	if (op != ASM_OP_NONE)
  		return (asm_extract(op, fmt, bits, b, slot));
  	return (0);
  }
  
  int
  asm_decode(uint64_t ip, struct asm_bundle *b)
  {
  	const char *tp;
  	unsigned int slot;
  	int ok;
  
  	memset(b, 0, sizeof(*b));
  
  	b->b_templ = asm_templname[TMPL(ip)];
  	if (b->b_templ == 0)
  		return (0);
  
  	slot = 0;
  	tp = b->b_templ;
  
  	ok = 1;
  	while (ok && *tp != 0) {
  		switch (*tp++) {
  		case 'B':
  			ok = asm_decodeB(ip, b, slot++);
  			break;
  		case 'F':
  			ok = asm_decodeF(ip, b, slot++);
  			break;
  		case 'I':
  			ok = asm_decodeI(ip, b, slot++);
  			break;
  		case 'L':
  			ok = (slot++ == 1) ? 1 : 0;
  			break;
  		case 'M':
  			ok = asm_decodeM(ip, b, slot++);
  			break;
  		case 'X':
  			ok = asm_decodeX(ip, b, slot++);
  			break;
  		case ';':
  			ok = 1;
  			break;
  		default:
  			ok = 0;
  			break;
  		}
  	}
  	return (ok);
  }
  